Ethologists, and others who study wolves, have suggested that the light-colored irises of wolves are adaptive. They may be useful for communication in the wild. Lighter irises make the pupils more visible. Since wolves are cooperative hunters this allows other members of the pack to...
Actually, these amazing animal eye colors aren't all that different from those of people, said Dr. Mark Fromer, an ophthalmologist at Lenox Hill Hospital in New York City. When people talk about eye color, they're actually referring to the color of the iris, a ring of muscle (known as...